All I can suggest at this point is perhaps if you have the time, you can re-read the comics of the time and see again with fresh eyes. For the record here's a list of her appearances between #241 and the Marriage Issues.
http://www.supermegamonkey.net/cgi-b...earch=1#011467
That's a total of 66 Issues. 38 of them ASM
Amazing Spider-Man #240-241
Amazing Spider-Man #242-243
Amazing Spider-Man #244-245
Amazing Spider-Man #246
Amazing Spider-Man #247-248
Peter Parker, the Spectacular Spider-Man #85
Amazing Spider-Man #249-251
Amazing Spider-Man #256-258 1st Puma. Spidey's costume revealed as a symbiote.
Peter Parker, the Spectacular Spider-Man #96
Amazing Spider-Man #259
Amazing Spider-Man #260-261
Amazing Spider-Man #263
Web of Spider-Man #1
Web of Spider-Man #2
Web of Spider-Man #3
Amazing Spider-Man #265 1st Silver Sable
Web of Spider-Man #6
Amazing Spider-Man annual #19 1st Alistair Smythe
Amazing Spider-Man #271
Web of Spider-Man #11
Web of Spider-Man #12
Web of Spider-Man #13
Amazing Spider-Man #273
Peter Parker, the Spectacular Spider-Man #111
Peter Parker, the Spectacular Spider-Man #112
Amazing Spider-Man #274
Amazing Spider-Man #275-276
Amazing Spider-Man #277
Peter Parker, the Spectacular Spider-Man #113
Web of Spider-Man #14-15
Peter Parker, the Spectacular Spider-Man #115-116
Amazing Spider-Man #279
Web of Spider-Man #18
Web of Spider-Man annual #2
Amazing Spider-Man #280-282
Peter Parker, the Spectacular Spider-Man #119
Amazing Spider-Man annual #20
Peter Parker, the Spectacular Spider-Man #121
Amazing Spider-Man #283
Amazing Spider-Man #284-286 Gang War begins
Peter Parker, the Spectacular Spider-Man #123
Amazing Spider-Man #287-288 Gang War concludes
Web of Spider-Man #28
Spider-Man vs. Wolverine #1
Web of Spider-Man #29
Peter Parker, the Spectacular Spider-Man #128-129
Amazing Spider-Man #290-292
One advantage of the Internet Era, is that because there's so much access and information available, it's different from earlier eras where you had to go by the grapevine and rumor mill and so on. So you can find hard data about stuff like "significant supporting character". For comparison, in ASM alone, Felicia Hardy appeared in 22 issues between 242-289 and she was the big new character at the time. And 57 issues overall since her first appearance in #193-289. So MJ after her return, already exceeded in a short amount of time Felicia's entire list of appearances.